In the supervision practice of trademarks by the industrial and commercial departments, in actual use of trademarks registered in black and white drafts, as long as you do not change the words, graphics or combinations of the trademarks, then your use of the words, graphics or other Adding any color to the combination is not a violation of trademark regulations, because trademark regulations do not stipulate that colors cannot be added to a registered trademark in use. However, for a registered trademark that specifies a color, the color cannot be changed when it is used as a registered trademark, otherwise it will be a violation of trademark regulations. Because once a trademark is successfully registered and a "Trademark Registration Certificate" is obtained, no changes can be made to the approved registered trademark sign in actual use, neither to the graphics, text, or combination thereof, nor to the designated use. The color cannot be changed. Therefore, it is recommended to use black and white drafts of trademark signs when applying for trademark registration, so as not to limit the use of the trademark after registration.